Ceph » rbd

Ceph Version: 0.48

Steps followed:

1. create a rbd image of size 1000 mb in rbd pool
2. resize the rbd image to size 0 mb
3. Export the rbd image to a local file. The command hangs.
However, getting rid of the command prompt,could see a local file of size 0.

Pasting below the screenshot for reference,

ubuntu@burnupi64:~/qemu/qemu$ rbd create rbd/rbd1 --size 1000
ubuntu@burnupi64:~/qemu/qemu$ rbd info rbd1
rbd image 'rbd1':
    size 1000 MB in 250 objects
    order 22 (4096 KB objects)
    block_name_prefix: rb.0.7
    parent:  (pool -1)
ubuntu@burnupi64:~/qemu/qemu$ rbd resize rbd/rbd1 --size 0
Resizing image: 100% complete...done.
ubuntu@burnupi64:~/qemu/qemu$ rbd export rbd/rbd1 test_file1
^C
ubuntu@burnupi64:~/qemu/qemu$ ls -l test_file1
-rw-r--r-- 1 ubuntu ubuntu 0 2012-07-30 18:36 test_file1